         c12 (make-coll "PROV2" "et86" nil 22)
         all-colls [c1 c2 c3 c4 c5 c6 c7 c8 c9 c10 c11 c12]]
     (index/flush-elastic-index)
-
-    (testing "temporal start date"
-      (are [sort-key items] (d/refs-match-order?
-                              items
-                              (search/find-refs :collection {:page-size 20
-                                                             :sort-key sort-key}))
-           "start_date" [c5 c1 c11 c2 c6 c3 c7 c4 c8 c9 c10 c12]
-           "-start_date" [c8 c4 c7 c3 c6 c2 c11 c1 c5 c9 c10 c12]))
-
-    (testing "temporal end date"
-      (are [sort-key items] (d/refs-match-order?
-                              items
-                              (search/find-refs :collection {:page-size 20
-                                                             :sort-key sort-key}))
-           "end_date" [c5 c1 c12 c2 c6 c7 c3 c4 c8 c9 c10 c11]
-           "-end_date" [c8 c4 c3 c7 c6 c2 c12 c1 c5 c9 c10 c11]))
 
     (testing "default sorting"
       (is (d/refs-match-order?

                        (reverse (sort-by (comp str/lower-case :entry-title) all-colls))
                        (search/find-refs :collection {:page-size 20 :sort-key sort-key}))
           "-entry_title"
           "-dataset_id"))))


        c5 (make-coll "PROV2" "et98" 9 19)
        c6 (make-coll "PROV2" "et91" 15 25)
        c7 (make-coll "PROV2" "et79" 20 29)
        c8 (make-coll "PROV2" "ET94" 25 36)

        c9 (make-coll "PROV1" "et95" nil nil)
        c10 (make-coll "PROV2" "et85" nil nil)
